Notify log subscription only when logger exists

Move logSubscription.notify into the branch that calls this.logger.log and remove the previous external call. This ensures the subscription is notified only when the configured logger is used, avoiding redundant or spurious notifications.

Author: MliKiowa

packages/napcat-core/helper/log.ts

@@ -196,8 +196,8 @@ export class LogWrapper implements ILogWrapper {
         // eslint-disable-next-line no-control-regex
         this.logger.log(level, message.replace(/\x1B[@-_][0-?]*[ -/]*[@-~]/g, ''));
       }
+      logSubscription.notify(JSON.stringify({ level, message }));
     }
-    logSubscription.notify(JSON.stringify({ level, message }));
   }
 
   log (...args: any[]) {